Why wont my words wrap

1

In this code: https://codepen.io/aoljaca/pen/pogwgpP

When you put screen to smallest width all the words wrap except for

function anotherExample(firstLine, lastLine) {
if (firstLine == '```' && lastLine == '```') {
  return multiLineCode;
}
}

Why is this? This is the markdown previewer so this is text not code per say.